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Question

State whether true or false:
Lenz's law is used to determine the magnitude of emf induced in the coil.

A
True
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B
False
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Solution

The correct option is B False
We can say that the magnitude of the emf induced in the circuit is proportional to the rate of change of flux.
ϵdϕdt
Lenz's law states that when an emf is generated by a change in magnetic flux according to Faraday's Law, the polarity of the induced emf is such, that it produces a current whose magnetic field opposes the change which produces it.
Therefore,
Lenz's law can be used to determine the direction of emf induced in the coil but not its magnitude.

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